Sony MDX-C670 Service Manual page 46

3-3. MAIN BOARD IC751 MN1883220Y5D1 (TUNER CONTROLLER) (MDX-C670RDS)
Pin No. Pin Name I/O
1 RD I
2 BUSY I
3 D3 I/O
4 D2 I/O
5 D1 I/O
6 D0 I/O
7 VDD –
8 X1 O
9 X2 I
10 GND –
11 XI I
12 – –
13 XO O
14 RESET I
15 RDS-CLK I
16 BU-IN I
17 BUSON I
18-29 – –
30 RDS-DATA I
31 – –
32-35 – –
36 – –
37 – –
38 PLL-DI I
39 PLL-DO O
40 PLL-CLK O
41 CE O
42 RQ O
43 LINK-OFF O
44 SCK I
45 SI I
46 SO O
47 VDD –
48 AVDD –
49 VREF –
50, 51 – –
52 SRAM-RST I
53 MUTE-SEL I
54 MS-1 I
55 MS-2 I
56 AM-S.METER I
57 FM-S.METER I
58 – –
Read pulse input terminal of data (D0 to D3) (Not used in this set) (open)
BUSY output monitor terminal (Not used in this set) (open)
Command input/output (Not used in this set) (open)
Command input/output (Not used in this set) (open)
Command input/output (Not used in this set) (open)
Command input/output (Not used in this set) (open)
Power supply (+5 V)
System clock input (8.0 MHz)
System clock output (8.0 MHz)
Ground
Connected to the GND
Not used (open)
Connected to the GND
Reset input
RDS serial clock input pin
BATT voltage detection pin
BUS ON control input pin
Not used (open)
RDS serial data input pin
Connected to the GND
Not used (open)
Connected to the GND
Connected to the GND
PLL serial data input pin
PLL serial data output pin
PLL serial clock output pin
PLL serial chip enable output pin
Bus request signal output pin
Link-off signal output pin (for SONY BUS)
Serial clock input pin (for SONY BUS)
Serial data input pin (for SONY BUS)
Serial data output pin (for SONY BUS)
Power supply (+5 V)
Power supply for A/D converter (+5 V)
Reference power supply (+5 V)
Connect to the GND
SRAM reset signal input pin
Muting select signal input pin (Not used in this set) (Connected to the GND)
Destination setting pin (Not used in this set) (Connected to the GND)
Destination setting pin (Not used in this set) (Connected to the GND)
AM signal meter voltage detection pin
FM signal meter voltage detection pin
Connected to the GND
– 15 –
Function